03-29-2022 01:16 AM
Dear Friends,
I am writing to you because I am slowly missing an idea, according to the following:
I started to implement Dot1x for the user VLAN, but there is one very important problem.
It consists in the fact that many PCs have a docking station that after removing the laptop it maintains the port in the UP state, which is associated with the fact that the port is authorized all the time - and a strange situation because after inserting the laptop again, there is no communication and you have to manually unplug the cable from dock station or to put and pick up the port - after that it working - I decided to add two commands to the config:
Authentication periodic
Authentication timer reauthentication 32400
But after implemented this, users report me that after come to office and plug PC, computer not asking for credentials - it looks that requth not work or port after 9h is going to reauth state and this state is maintain all the time.
Unplug the cable or shutdown and no shutdown only work.....
Below my config:
radius server ISE-1
address ipv4 XXXXXXXXX auth-port 1812 acct-port 1813
key xxxxxxx
!
radius server ISE-2
address ipv4 XXXXXXXXX auth-port 1812 acct-port 1813
key xxxxxxxxxx
!
aaa group server radius ISE_RADIUS
server name ISE-1
server name ISE-2
!
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa authentication dot1x default group ISE_RADIUS
aaa authorization network default group ISE_RADIUS
aaa accounting dot1x default start-stop group ISE_RADIUS
!
!
!
!
!
aaa server radius dynamic-author
client XXXXXXXX server-key XXXXXXXXX
client XXXXXXXX server-key XXXXXXXXXX
!
dot1x system-auth-control
!
ip device tracking
radius-server vsa send authentication
radius-server vsa send accounting
device-sensor filter-list cdp list TLV-CDP
tlv name device-name
tlv name address-type
tlv name capabilities-type
tlv name version-type
tlv name platform-type
device-sensor filter-spec cdp include list TLV-CDP
device-sensor accounting
device-sensor notify all-changes
!
interface GigabitEthernetXXXXXXXX -----
sw host
switchport mode access
switchport voice vlan XXXX
ip access-group BLOCK_8021x in
authentication event fail action next-method
authentication event server dead action authorize vlan XXXXX
authentication event server dead action authorize voice
authentication event server alive action reinitialize
authentication host-mode multi-auth
authentication open
authentication order mab dot1x
authentication priority dot1x mab
authentication port-control auto
authentication periodic
authentication timer reauthenticate 32400
authentication timer inactivity 3600
authentication violation restrict
mab
dot1x pae authenticator
dot1x timeout quiet-period 300
dot1x timeout tx-period 10
spanning-tree portfast
!
ip http server
ip http secure-server
cdp run
snmp-server community XXXXXXXX RO
mac address-table notification change interval 0
mac address-table notification change
!
!
ip access-list extended BLOCK_8021x
permit udp any any eq bootps
permit udp any any eq bootpc
deny ip any any
!
ip radius source-interface VlanXXXX
!
!
radius-server attribute 6 on-for-login-auth
radius-server attribute 8 include-in-access-req
radius-server attribute 25 access-request include
!
authentication mac-move permit
!
Vlan 70 which is user vlan is receiving from ISE (Authorization Profile)
Any idea?
Solved! Go to Solution.
03-31-2022 12:05 AM
Yes, I have implemented IP Device Tracking. SNMP Traps not work becauese please remember that port is always UP (docking station holds up port in UP state).
I find workaround - In windows supplicant I check option to remember credentials - and it working
03-30-2022 12:00 PM - edited 03-30-2022 12:36 PM
Do you have the option to implement IP Device Tracking (IPDT) on your switches?
And/or the switch can send SNMP traps for link (up/down) and MAC (add/remove) events, these traps must then be send to ISE. ISE must be configured to listen to these traps. This way, ISE will be notified immediately that something happened to the endpoint and can send a CoA to the switch to terminate the access-session.
Cheers,
Hans
03-31-2022 12:05 AM
Yes, I have implemented IP Device Tracking. SNMP Traps not work becauese please remember that port is always UP (docking station holds up port in UP state).
I find workaround - In windows supplicant I check option to remember credentials - and it working
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